Senior Golang/C++ Engineer

Job description

Our company:

At Proton, we envision an internet where privacy is the default, and we’re building ways to help all people secure their digital lives and take control of their data. ProtonMail was founded in 2014 by a group of scientists who met at the European Organization for Nuclear Research (CERN). And since our inception, we have grown at a fast pace and today have over 40 million customers worldwide. 

Our principal product, ProtonMail, is the world’s largest secure email service. Our second product, ProtonVPN, is one of the world’s most popular VPN services. Our vision is to build an internet platform for the protection of digital rights, and we are also developing additional products, including ProtonCalendar, ProtonDrive, and more to come. 

Proton customers include New York Times journalists, some of the world’s largest corporations, and millions of ordinary citizens from over 180 countries. Our team is diverse and dynamic, representing over 30 different nationalities, with offices in Geneva, Zurich, Prague, Vilnius, Skopje, and Taipei. We're also considering future potential office locations such as London and Barcelona.

About the position:

We are looking for a desktop application developer for Proton Bridge. Proton Bridge integrates your ProtonMail account with popular email clients, such as Microsoft Outlook, Mozilla Thunderbird, or Apple Mail. The application runs in the background by seamlessly encrypting and decrypting messages as they enter and leave your computer. Bridge is compatible with most email clients supporting IMAP and SMTP protocols.

You will:

  • Automate native email client interaction with Proton Bridge
  • Develop and maintain interface between Proton Bridge and Proton API
  • Analyze MIME structure of messages
  • Optimize the performance of local servers
  • Develop the desktop GUI and user experience

Job requirements

You have:

  • Experience with object-oriented compiled languages, such as Golang, C++, C#, or Rust
  • Experience developing and testing desktop applications
  • Comfortable using collaboration and developer efficiency tools such as git, gitlab CI, etc.
  • An understanding of the principles of UI design and user experience

Technologies we use and teach:

  • Languages: Golang, C++, C#, make, bash
  • Frameworks: Qt with QML
  • Platforms: Windows, macOS, Linux
  • Collaboration tools: git, gitlab, JIRA, Confluence

Why you should join Proton:

  • We work on interesting problems every day. There is never a dull moment.
  • Our collaborative culture means everyone’s opinion matters. You can have a significant impact.
  • Our rapid growth means there are many opportunities for learning and professional fulfillment.
  • The chance to do something meaningful. ProtonMail supports journalists, and advocates of free speech and democracy around the world. Our work saves lives.
  • Be part of something bigger. Millions of people and businesses around the world have embraced our idea of an Internet where privacy and security are the default. Join the privacy movement that is changing the world.


ProtonMail uses the Recruitee recruitment platform for more effective hiring process and a better candidate experience. Your data will always be kept confidential and is not shared with any third parties. Keep in mind that you will receive emails from the email address or other addresses on the domain.